Did you ever get your box to work? I have the exact same problem 1 buzz box 128 and 1 64 that are working with a particular provider's url and an E1 and a new 64 that are not connecting to this guy.
I am not naming him but he has an outstanding iptv service one that I'm looking for but he has 0 support. Why are 2 working, connecting to him and the other 2 not and they are 2 buzz 64 of the same on top of that and 1 is connecting and the other one is not and I am also using a vpn